//封装cookies
function setCookie(c_name, value, expireMinutes) {
    var exdate = new Date();
    exdate.setTime(exdate.getTime() + expireMinutes * 60 * 1000);
    document.cookie = c_name + "=" + escape(value) + ((expireMinutes == null) ? "" : ";expires=" + exdate.toGMTString());
}

function getCookie(c_name) {
    if (document.cookie.length > 0) {
        var c_start = document.cookie.indexOf(c_name + "=");
        if (c_start !== -1) {
            c_start = c_start + c_name.length + 1;
            var c_end = document.cookie.indexOf(";", c_start);
            if (c_end === -1)
                c_end = document.cookie.length
            return unescape(document.cookie.substring(c_start, c_end))
        }
    }
    return ""
}

function delCookie(c_name) {
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval = getCookie(c_name);
    if (cval != null) {
        document.cookie = c_name + "=" + cval + ";expires=" + exp.toGMTString();
    }
}

export {
    setCookie,
    getCookie,
    delCookie
}